谢谢你的帮助...
问题
在将 html 表格标签/片段（我已转换为字符串）转换为 PDF 文档时...
我能够使用这种技术成功地 将 css 样式应用于 PDF 文档......
CSSResolver cssResolver = XMLWorkerHelper.getInstance().getDefaultCssResolver(false);
cssResolver.addCss("td {border-right: white .1px solid;}", true);
但是，我使用现有的 css 文件（即，使用 CssFile 对象）将 css 应用于 PDF 文档没有成功，就像这样......
CSSResolver cssResolver = new StyleAttrCSSResolver();
InputStream csspathtest = Thread.currentThread().getContextClassLoader().getResourceAsStream("styles/itextweb.css");
CssFile cssfiletest = XMLWorkerHelper.getCSS(csspathtest);
cssResolver.addCss(cssfiletest);
...我无法让这个工作，也不知道问题是什么...我得到...
Java.io.IOException The document has no pages
问题：
如何正确使用 CssFile 和 CssResolver 将 css 样式（即，从现有的“.css”文件）应用到我的 PDF 文档？（我使用 iText 完成此操作的方式有什么问题？）
（再次感谢您对此提供的任何帮助/指导）
================= 下面是更详细的信息 ===================
Java 6、JSF (Mojarra) 2.1.11、Primefaces v3.4.2、itextpdf v5.3.4、xmlworker v1.2.1
这是有问题的“printPDF”功能......
public void createPDF() throws DocumentException, CssResolverException
{
FacesContext context = FacesContext.getCurrentInstance();
ExternalContext econtext = context.getExternalContext();
try
{
String htmlstring = context.getExternalContext().getRequestParameterMap().get("testForm:htmlstring");
InputStream is = new ByteArrayInputStream(htmlstring.getBytes());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// step 1
Document document = new Document();
// step 2
PdfWriter writer = PdfWriter.getInstance(document, baos);
writer.setInitialLeading(12.5f);
// step 3
document.open();
HtmlPipelineContext htmlContext = new HtmlPipelineContext(null);
htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());
// CSS
CSSResolver cssResolver = new StyleAttrCSSResolver();
InputStream csspathtest = Thread.currentThread().getContextClassLoader().getResourceAsStream("styles/itextweb.css");
CssFile cssfiletest = XMLWorkerHelper.getCSS(csspathtest);
cssResolver.addCss(cssfiletest);
Pipeline<?> pipeline = new CssResolverPipeline(cssResolver, new HtmlPipeline(htmlContext, new PdfWriterPipeline(document, writer)));
XMLWorker worker = new XMLWorker(pipeline, true);
XMLParser p = new XMLParser(worker);
p.parse(is); //new FileInputStream("results/demo2/walden.html"));
// step
document.close();
//post back...
HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
response.setContentType("application/pdf");
response.setHeader("Expires", "0");
response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
response.setHeader("Content-Type", "application/pdf");
response.setHeader("Content-disposition","attachment;filename=file.pdf");
response.setContentLength(baos.size());
OutputStream os = response.getOutputStream();
baos.writeTo(os);
os.flush();
os.close();
context.responseComplete();
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
catch (DocumentException e)
{
e.printStackTrace();
}
}
这是包含要解析为 pdf 的 html 表格片段的页面（即 id="table1"）...
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:p="http://primefaces.org/ui">
<f:view contentType="text/html">
<h:head>
<title>test html-to-pdf with itext...</title>
<meta charset="utf-8" />
</h:head>
<h:body>
<h:form id="testForm">
<p:panel id="queryPanel" header="...test itext html-to-pdf conversion..." style="width:100%;">
<table id='table1'>
<thead class="dt-thd">
<tr id="table1-h-hdr-row">
<th style="width: 120px" class="dt-hhdr-c " >Last name</th>
<th style="width: 120px" class="dt-hhdr-c " >First Name</th>
<th style="width: 120px" class="dt-hhdr-c " >Middle Name</th>
<th style="width: 180px" class="dt-hhdr-c " >Date Of Birth</th>
</tr>
</thead>
<tbody>
<tr class="dt-r-even" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c row-selected-left" ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameAAA</a></td>
<td style="width: 120px" class="dt-c row-selected" >firstnameAAA</td>
<td style="width: 120px" class="dt-c row-selected" >A</td>
<td style="width: 180px" class="dt-c row-selected" >11/27/1971</td>
</tr>
<tr class="dt-r-odd" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c " ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameBBB</a></td>
<td style="width: 120px" class="dt-c " >firstnameBBB</td>
<td style="width: 120px" class="dt-c " >B</td>
<td style="width: 180px" class="dt-c " >01/15/1951</td>
</tr>
<tr class="dt-r-even" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c " ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameCCC</a></td>
<td style="width: 120px" class="dt-c " >firstnameCCC</td>
<td style="width: 120px" class="dt-c " >C</td>
<td style="width: 180px" class="dt-c " >02/16/1962</td>
</tr>
<tr class="dt-r-odd" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c " ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameDDD</a></td>
<td style="width: 120px" class="dt-c " >firstnameDDD</td>
<td style="width: 120px" class="dt-c " >D</td>
<td style="width: 180px" class="dt-c " >03/17/1973</td>
</tr>
<tr class="dt-r-even" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c " ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameEEE</a></td>
<td style="width: 120px" class="dt-c " >firstnameEEE</td>
<td style="width: 120px" class="dt-c " >E</td>
<td style="width: 180px" class="dt-c " >04/18/1984</td>
</tr>
<tr class="dt-r-odd" onclick="uiOnRowClick('table1', 14, this)">
<td style="width: 120px" class="dt-c " ><a class="column-link " onfocus="uiOnRowClick('table1', 14, this.parentNode.parentNode)" onclick="storeFilters()" href="#">lastnameFFF</a></td>
<td style="width: 120px" class="dt-c " >firstnameFFF</td>
<td style="width: 120px" class="dt-c " >F</td>
<td style="width: 180px" class="dt-c " >05/19/1995</td>
</tr>
</tbody>
</table>
<p:commandButton
id="printPdf"
value="Print"
action="#{testBean.createPDF2}"
ajax="false"
onclick="printPreview(this);this.form.target='_blank'"/>
<h:inputHidden id="htmlstring" value="no value"/>
</p:panel>
</h:form>
<h:outputStylesheet library="styles" name="itextweb.css" />
<h:outputScript library="primefaces" name="/jquery/jquery.js" />
<h:outputScript library="primefaces" name="/jquery/plugins/ui/jquery-ui.custom.js" />
<h:outputScript library="primefaces" name="/jquery/plugins/inputmask/maskedinput.js" />
<h:outputScript library="js" name="itextweb.js" />
</h:body>
</f:view>
</html>
这是使用的javascript...
function uiOnRowClick(a, b, c)
{
alert("uiOnRowClick(a,b,c) function called...blah...");
}
function storeFilters()
{
alert("storeFilters() function called...bleah...");
}
function printPreview(e)
{
var t = document.getElementById("table1");
var htmlstring = "<table id='table1-hdr' class='dt' style='width:2416px;position:absolute'>" + t.innerHTML + "</table>";
document.getElementById('testForm:htmlstring').value = htmlstring;
}
这是此示例的 CSS 样式表...
.text1
{
background-color: transparent !important;
font-weight: bold;
font-size: 2em;
color: blue;
text-align:center;
}
.ui-inputfield {
background: white !important;
height: 10px !important;
vertical-align: middle;
display:inline-block;
white-space: nowrap;
}
.ui-button
{
margin-top: .5px !important;
vertical-align: middle !important;
display:inline-block !important;
white-space: nowrap !important;
text-align: center !important;
}
.ui-message-error
{
background: transparent !important;
border: none !important;
font-size: .9em !important;
font-weight: normal !important;
font-family: Arial, sans-serif !important;
}
.ui-message-error-icon {
display: none;
}
.ui-messages-error
{
background: transparent !important;
border: none !important;
font-size: .9em !important;
font-weight: normal !important;
font-family: Arial, sans-serif !important;
}
.ui-messages-error-icon {
display: none;
}
.ui-inputfield.ui-state-error
{
background: pink !important;
}
form *
{
box-sizing: content-box !important;
-moz-box-sizing: content-box !important;
-ms-box-sizing: content-box !important;
}
.ui-widget, .ui-widget .ui-widget
{
font-size: 90% !important;
}
.dt-thd
{
}
.table1-h-hdr-row
{
}
.dt-hhdr-c
{
color: blue;
background-color: lightgray;
}
.dt-r-odd
{
background-color: aliceblue;
}
.dt-r-even
{
background-color: lightskyblue;
}
.dt-c
{
font-size: 8px;
font-weight: normal;
}
下面是与此示例一起使用的 pom.xml（说明了依赖项/版本/等）...
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>aaa.bbb.ccc</groupId>
<artifactId>itextweb-war</artifactId>
<packaging>war</packaging>
<version>1</version>
<name>itextweb-war</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.1.11</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.1.11</version>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>el-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>el-impl</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.1.1.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>org.primefaces.themes</groupId>
<artifactId>aristo</artifactId>
<version>1.0.1</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.3.4</version>
</dependency>
<dependency>
<groupId>com.itextpdf.tool</groupId>
<artifactId>xmlworker</artifactId>
<version>1.2.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
</plugin>
</plugins>
<finalName>${project.name}-${project.version}</finalName>
</build>
</project>